Jump To:

• Sinn Fein
  Sinn Fein

  noun

  a political organization in Ireland, founded about 1905, advocating the complete political separation from Great Britain of a unified Ireland.
• Sinn Féin
  Sinn Féin

  noun

  an Irish republican political movement founded about 1905 and linked to the revolutionary Irish Republican Army: divided into a Provisional and an Official movement since a similar split in the IRA in late 1969

Sinn Fein

American  

[shin feyn] / ˈʃɪn ˈfeɪn /

noun

1. a political organization in Ireland, founded about 1905, advocating the complete political separation from Great Britain of a unified Ireland.

2. a member of this organization.

---

Sinn Féin British  

/ ˈʃɪn ˈfeːn /

noun

1. an Irish republican political movement founded about 1905 and linked to the revolutionary Irish Republican Army: divided into a Provisional and an Official movement since a similar split in the IRA in late 1969

---

Sinn Fein Cultural  

1. An Irish political party (in Gaelic it means “Ourselves Alone”) that has long combatted Great Britain's influence in Ireland and sought the unification of Northern Ireland with the Irish republic in the south; generally considered the political portion of the Irish Republican Army. One wing of it has engaged in terrorism.

---

Other Word Forms

Derived Forms

• Sinn Feinism
  noun
• Sinn Féiner
  noun
• Sinn Feiner
  noun
• Sinn Féinism
  noun

Etymology

Origin of Sinn Fein

From Irish sinn f éin “we ourselves”

Example Sentences

The Democratic Unionist Party won the subsequent poll, eventually taking the spoils by going into government with Sinn Fein.

From BBC • Jan. 31, 2026

The DUP agreed to return to power-sharing with the Irish nationalist party Sinn Fein earlier this year following a series of assurances about Northern Ireland’s constitutional position within the United Kingdom.

From Seattle Times • Mar. 29, 2024

Now, for the first time, a Sinn Fein politician holds Northern Ireland’s top political office, a landmark moment for the party and for the broader region as a power-sharing government is restored.

From New York Times • Feb. 3, 2024

The attack was condemned across all political parties, including the main opposition Sinn Fein.

From Reuters • Nov. 24, 2023

Invited to rebuke an Irish Member for wearing a Sinn Fein badge he flatly declined, with the remark that he had nothing to do with the clothes Members chose to wear.

From Punch, or the London Charivari, Vol. 150, June 28th, 1916 by Various